Cooking stove



July 29, 1958 I J. E. CHAMBERS 2,845,056-

COOKING STOVE Filed May 24, 1952 5 Sheets-Sheet 1 July 29, 1958 J. E. CHAMBERS COOKING STOVE 5 Sheets-Sheet 2 Filed May 24, 1952 y 29, 1958 J. E. CHAMBER 2,845,056

COOKING STOVE Filed May 24, 1952 1 I 5 Sheets-Sheet 3 3 3Q L9 21 G G D 27 26 I atent Office 2,8410% Patented July 29, l$58 COOKING STOVE John E. Chambers, Shelbyville, Iud., assignor to Chamhers Corporation, a corporation of Indiana Application May 24, 1952, Serial No. 289,863

Claims. (Cl. 126-39) This invention relates to a cooking stove, and is particularly concerned with a stove having a large multiple burner cooking capacity in a restricted space.

Conventional flat cooking tops are limited as to the number of burners that may be accommodated in a given area because of the space required between adjacent burners. Cooking utensils are often larger in area than the area occupied by a single burner, and enough space must be left between adjacent burners to provide for the overlap in area from two utensils that may be placed on adjacent burners.

The cooking stove constructed in accordance with my invention is provided with a plurality of burners arranged in tiers so that the difference in elevation between the burners eliminates the necessity of providing the space required between adjacent burners on the same level, thereby increasing the burner cooking capacity for any area over that obtained on a flat surface.

The burners are mounted in burner boxes which have their front wall forming the riser for the tier. The front wall may be vertical or may be arranged at a slight angle from the vertical so that the products of combustion from each burner are deflected forwardly from the burner box on the next higher tier. The front wall may be pivotally supported adjacent the front edge of the bottom wall so that it may be retained in either vertical or in forwardly tilted position. In either position the height of the front wall of each burner box prevents the hot products of combustion of a lower burner box from interfering with the proper combustion of the gas from its burners, but the forwardly tilted position has the added advantage of deflecting the exhaust gases from the lower burners away from the higher burners to remove any possibility of interfering with the proper functioning of the burners of the higher tiers. A constantly burning pilot burner is positioned near a trailer tube leading to each of the burners. When gas is allowed to enter the trailer tube it is ignited by the constantly burning flame from the pilot burner, and the burning gas issuing from the trailer tube may ignite the gas issuing from any of the burners when the valve controlling the flow of gas to the specific burner is opened.

The structure of the present invention by which the above and other advantages are attained will be described in the following specification, taken in conjunction with the accompanying drawings, showing a preferred illustrative embodiment of the invention, in which:

Figure 1 is a perspective view of a cooking stove embodying the invention, with portions of the structure broken away to facilitate illustration of the interior;

Fig. 2 is a fragmentary front view, partly in section and partly in elevation;

Fig. 3 is a cross sectional view, taken along the line 3-3 of Fig. 2; and

Fig. 4 is a fragmentary cross sectional view showing a modified structure for the front wall of the burner box.

Referring to the drawings, the frame of the stove comprises a bottom wall 2, a relatively low front wall 3,

a back wall 4, and a pair of end walls 5. The end walls each comprise inner and outer panels 6 and 7 provided with an air space therebetween. The back wall also preferably comprises a pair of spaced panels; Angle or channel irons, indicated generally at 8, may be provided to hold the inner and outer panels together in properly spaced relationship. The end walls slope downwardly towards the front edge of the stove, as indicated at 9.

A plurality of burner boxes 10, 11, 12 and 13 are arranged within the frame of the stove in tier formation, with the end walls 14 of each burner box welded or otherwise rigidly secured to the inner side wall panels 6. The front wall 15 of the lowermost burner box 10 is vertical, but the front wall 16 of each of the other burner boxes preferably slopes forwardly, for reasons hereinafter mentioned, although they may also be vertical, if desired. Except for the angle of the front wall all the burner boxes are identical and, therefore, only one will be described.

Each burner box is provided with a bottom Wall 17 which supports two conventional burners 18 connected by a pipe 19 to a gas manifold 20 and controlled individually by valves 21. A short inwardly extending horizontal flange 22 extends around the top of each burner box and defines an open top positioned above the burners 18. A plurality of grate fingers 23 secured in any suitable manner to flange 22 extend inwardly to provide support for cooking utensils that are to be positioned over the individual burners. A pilot burner 24 is also connected to manifold 20 by a pipe 25 and provides a constantly burningflame under burner box 10 adjacent the midportion of the front of the stove.

A trailer tube 26 leads diagonally upward from a point adjacent pilot burner 24 and has branches 27 leading to each burner. The bottom 17 of each burner box is provided with an aperture 27' through which the branches 27 extend. The lower end of the trailer tube is connected by a pipe 28 to a spring-loaded valve 2t connected to manifold 20. A handle 30, extending through the front wall 3 controls valve 29 so that gas may be forced through the trailer tube and its branches. The valve 29 is normally held closed by a tension spring 31 which has one end connected to a hook 32 secured to inner panel 6 and its other end connected to a lever 33 secured to the valve. The valve 29 will remain open so long as the handle 30 is held in the valve opening position, but will be automatically returned to closed position by the action of spring 31 as soon as handle 30 is released.

The trailer tube and each of its branches is provided with a closely spaced series of small apertures or ports 34 which permit the gas to issue therethrough when handle 3i) is held in the open position. The flame from pilot burner 24 ignites the gas issuing from the apertures of I the adjacent portion of the trailer tube as soon as the valve 29 is opened to allow gas to flow into the trailer tube, and the flame propagates from each aperture to the adjacent aperture until flames cover the entire length of the trailer tube and its branches. These flames continue to burn as long as valve 29 is held open, and any burner 18 may be ignited by opening the valve 21, controlling the flow of gas to that particular burner, while handle 30 is held in valve opening position.

The front wall of each burner box extends above the burners contained therein and thereby prevents the products of combustion of the lower burner from interfering with the flow of primary or secondary air necessary for the proper operation of each burner. The height of the front wall of the burner box is suflicient also to prevent cooking utensils placed over the burners of one tier from contact with the utensils on adjacent tiers.

The forward slope of the front walls of the upper burner boxes -is so slight that it will not interfere with cooking utensils placed over the burners of the adjacent lower tier. The angle of the front wall tends to deflect the products of combustion of the adjacent lower tier forwardly and thereby provides additional protection a flil St the possibility that the hot exhaust gases from lower burner may fle e he p of the djace b rn and interfere t t e power e t n o the hi er burner.

e r m all which P fe ab y comp ises a removb Pa 1 Prov ded w t a p ality of per ures 35 to provide the air necessary for combustion of the gas issuing rom, the pi b rne a d f o the trail r t be when the valve 29 is open. The inner panels 6 are provided i a pl ral t of aper ur 3 o p rmit the e p of t e produc o o b ion om he p l t burner and the trailer tube. These products of combustion flow upwardly between panels 6 and 7 and into the mo phere hrou ano r eri o apertures 3 proed a acen t e upper d of t me1 In he mod d r shown in Fig- 4, th f n wa l 38 of the burner box is provided with a plurality of prongs 39 at its lower edge. The bottom wall 17' of the burner box has a plurality of slots 40 through which prongs 39 extend, The slots 40 provide enough clearance to allow the front wall to be tilted forwardly from a vertical position to the sloping position shown in dotted lines. A flange 41 provided on each end of the front l i letted' eua e a n ca d a and a bolt 43 X ndihs th o g n pe u e in p e 6 and t e slot 42 is provided with a wing nut 44 to hold the front wall in either position. The front wall may ordinarily be kept in the sloping position to obtain the added advantage of deflecting the hot products of combustion from the lo er t e away om h upp r er bo ,If the forwardly sloping front wall interferes with the positioning of any cooking utensil on the burner box adjacent the e o the uts 44 may h o e o perm h fro a to b move t s r ic l Po t o n h s mbodiment the flange 22 may be secured to the panel 6 at its ends to provide additional rigidity. The front wall 38 is provided with a rearwardly extending flange 45 which fits over the flange 2 2. The flange 45 is notched in alignment with the grate fingers 23 to Prevent the grate fi ers r m i ter er n ith h flange 45 when the front wall is moved to, its vertical position.

rom t e or go g it wi l e ppa ent hat I hav de ised. a ee ns s a in e ter urn r c okin c pa y han sto es Oi he s me a ea p eviously known and have provided simple and efficient means for lighting n the. bur er a d red.-

th u h I h e deser bed Pre err embodime to the invention in considerable detail, it will be understood that the description therof is intended to be illustrative, rather than restrictive, as many details may be modified or changed without departing from the spirit or scope of the appended claims. Accordingly, I do not desire to be restricted to the exact structure described.

I claim:

1. In a cooking stove, a frame comprising a front wall, a back wall, and a pair of end walls connecting corresponding edges of said front and back walls, a plurality of burner boxes supported in tier formation in said frame, the cross sectional area of; said frame in a horizontal plane being less than the total cross sectional area of said burner boxes taken in a horizontal plane at the top of each of said burner boxes, each of; said burner boxs having a front wall, a rear; wall and a bottom wall, and a burner mounted on the bottom wall of each of said burner boxes, the front wall of each of; said burner boxes above the front one sloping forwardly in an up-. ward direction from the upper edge of the rear wall of the burner box positioned immediately in front thereof to deflect the hot exhaust gases from each of said burners forwardly of the burners positioned at a higher level.

2. A cooking stove as recited in claim 1, in which the front wall of each burner box above the front one is pivotally mounted adjacent the front edge of the bottom wall of said burner box, whereby it may be tilted forwardly, and means for retaining said front wall in either vertical or angular position.

3. In a cooking stove, a frame comprising a front wall, a back wall, and a pair of end walls connecting corresponding edges of said front and back walls, a plurality of burner boxes supported in tier formation in said frame, the cross sectional area of said frame in a horizontal plane being less than the total cross sectional area of said burner boxes taken in a horizontal plane at the top of each of said burner boxes, the lower front edge of each burner box above the front one being adjacent the upper rear edge of the burner box positioned immediately in front thereof, a plurality of burners mounted in said boxes, 3. gas manifold positioned below the front burner box, pipes connecting each of said burners to said manifold, a pilot burner positioned under said front box and connect d to said manifold, a trailer tube connected to said manifold and leading from a point adjacent said pilot burner diagonally upward to each of said burners, manually operable means for controlling the flow of gas through said trailer tube, and a plurality of individual valves for controlling the flow of gas through said pipes to selectively ignite individual burners by flames from said trailer tube- 4. In a cooking stove, a frame comprising a front wall, a back wall, and a pair of end walls connecting corrcsponding edges of said front and back walls, a plurality of burner boxes supported in tier formation in said frame, the lower front edge of each burner box above the front one being adjacent the upper rear edge of the burner box positioned immediately in front thereof, a plurality of burners mounted in said burner boxes, a conStdnily burning pilot burner positioned under said front box, and a trailer tube operable to propagate the flame from said pilot burner to each of said burners, whereby said burners may be individually ignited.

5. A cooking stove as recited in claim 4, in which the front wall of each burner box above the front one is pivotallymounted adjacent the front edge of the bottom wall of said burner box, whereby it may be tilted forwardly, and means for retaining said front wall in either vertical or angular position.

References Cited in the file of this patent UNITED STATES PATENTS D. 100,284 Perlman July 7, 1936 D. 119,062 Chindlund Feb. 20, 1940.

38,083 Snyder Mar. 3,], 1863 1,480,119 Schey a- Jan. 8, 1924 1,491,945 Clement Apr. 29, 19.24 1,630,644 Troicl May 31, 1927 1,686,604 Dester Oct. 9, 1928 1,881,987 Weiler Oct. 11, 1932 1,954,580 Toomey Apr. 10, 1934 2,049,650 Hobson Aug. 14, 19.36 2,072,552 Gauger Mar. 2, 1937 2,107,972 Antrim Feb. 8, 1938 2,205,160 Trackwell 1 June 18. 1940 2,217,953 Igou Oct. 15, 1940: 2,661,732 OKeefe Dec. 8, 195.3 2,688,408 Binggely Sept. 7, 1954 FOREIGN PATENTS 163,685, Switzerland Nov. 1, 1933, 

